Re: trouble configuring the touchscreen driver for OMAP OSK 5912

[Dirk Behme <dirk.behme@googlemail.com>]

Kipisz, Steven wrote:
> I don't have my code handy right now, but if I remember correctly, in
> menuconfig you need to enable SPI.  The touchscreen on the display
> module is an ADS7846 so you need to enable that touchscreen.  If I
> remember correctly, you need to enable SPI support first before the
> ADS7846 shows up as an option under Touchscreens.

Mistral QVLM display module at OSK works quite well for me. 
My config:

#
# SPI support
#
CONFIG_SPI=y
CONFIG_SPI_MASTER=y

#
# SPI Master Controller Drivers
#
CONFIG_SPI_BITBANG=y
CONFIG_SPI_OMAP_UWIRE=y

#
# Input Device Drivers
#
CONFIG_INPUT_KEYBOARD=y
...
CONFIG_KEYBOARD_OMAP=y
...
CONFIG_INPUT_TOUCHSCREEN=y
CONFIG_TOUCHSCREEN_ADS7846=y

Hth,

Dirk

> -----Original Message-----
> From: linux-omap-open-source-bounces+s-kipisz2=ti.com@linux.omap.com
> [mailto:linux-omap-open-source-bounces+s-kipisz2=ti.com@linux.omap.com]
> On Behalf Of abhishek@nextbitcpu.com
> Sent: Friday, February 16, 2007 12:20 AM
> To: linux-omap-open-source@linux.omap.com
> Subject: trouble configuring the touchscreen driver for OMAP OSK 5912
> 
> Hello,
> 
> I have been trying to build the linux kernel for the omap osk 5912 with
> touchscreen option but it is not working. The OSK is connected to a
> Mistral QVLM display module.
>  I am using linux kernel version 2.6.18 along with the appropriate omap
> patch patch-2.6.18-omap1. After applying the patch i use the following
> procedure.
> 
> make clean
> make omap_osk_5912_defconfig
> make menuconfig
> 
> I use the following link for reference
> http://oskfordummies.hp.infoseek.co.jp/howto/touch.html
> 
> According to this refence document i have to enable the  options
> 
> CONFIG_INPUT_EVDEV
> CONFIG_INPUT_TOUCHSCREEN
> CONFIG_TOUCHSCREEN_OMAP
> 
> i am not getting any option for CONFIG_TOUCHSCREEN_OMAP. Also while
> trying
> to enable the LCD i dont get an option for CONFIG_FB_OMAP_INTERNAL_LCDC.
> 
> here is the Input Device Drivers section of .config file generated after
> the 'make menuconfig' command.
> 
> #
> # Input Device Drivers
> #
> CONFIG_INPUT_KEYBOARD=y
> # CONFIG_KEYBOARD_ATKBD is not set
> # CONFIG_KEYBOARD_SUNKBD is not set
> # CONFIG_KEYBOARD_LKKBD is not set
> # CONFIG_KEYBOARD_XTKBD is not set
> # CONFIG_KEYBOARD_NEWTON is not set
> CONFIG_KEYBOARD_OMAP=y
> # CONFIG_INPUT_MOUSE is not set
> # CONFIG_INPUT_JOYSTICK is not set
> CONFIG_INPUT_TOUCHSCREEN=y
> # CONFIG_TOUCHSCREEN_GUNZE is not set
> # CONFIG_TOUCHSCREEN_ELO is not set
> # CONFIG_TOUCHSCREEN_MTOUCH is not set
> # CONFIG_TOUCHSCREEN_MK712 is not set
> # CONFIG_INPUT_MISC is not set
> 
> #
> 
> 
> The graphics support section of .config
> 
> #
> # Graphics support
> #
> CONFIG_FIRMWARE_EDID=y
> CONFIG_FB=y
> # CONFIG_FB_CFB_FILLRECT is not set
> # CONFIG_FB_CFB_COPYAREA is not set
> # CONFIG_FB_CFB_IMAGEBLIT is not set
> # CONFIG_FB_MACMODES is not set
> # CONFIG_FB_BACKLIGHT is not set
> CONFIG_FB_MODE_HELPERS=y
> # CONFIG_FB_TILEBLITTING is not set
> # CONFIG_FB_S1D13XXX is not set
> # CONFIG_FB_VIRTUAL is not set
> CONFIG_FB_OMAP=y
> # CONFIG_FB_OMAP_LCDC_EXTERNAL is not set
> # CONFIG_FB_OMAP_LCD_MIPID is not set
> # CONFIG_FB_OMAP_BOOTLOADER_INIT is not set
> CONFIG_FB_OMAP_CONSISTENT_DMA_SIZE=2
> # CONFIG_FB_OMAP_DMA_TUNE is not set
> 
> #
> 
> Still i continued with the following procedure and loaded the kernel
> using
> using tftp.
> 
> $ make
> $ arm-linux-objcopy -O binary -R .note -R .comment -S
> arch/arm/boot/compressed/vmlinux linux.bin
> $ gzip -9 linux.bin
> $ /usr/src/u-boot-1.1.6/tools/mkimage -A arm -O linux -T kernel -C gzip
> -a
> 0x10c08000 -e 0x10c08000 -n 'Linux Kernel Image' -d linux.bin.gz
> uImage.cc
> $ cp uImage.cc /tftpboot/uImage.cc
> 
> The kernel boots correctly but when i run the command
> 
> cat /proc/bus/input/devices
> 
> nothing is displayed.
> 
> Is there anything i missed out when compiling the kernel? Plese help.
> 
> Abhishek Desai
> 
> 
> 
> 
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